To provide a composite film exhibiting photochromism, which is excellent in film forming property and transparency in a dark environment, shows high light-shielding property by irradiation with light, and can be used as a dimming film or the like.
The composite film comprises a transition metal oxide, a water-soluble polymeric compound, and a water-soluble compound having a hydroxy group (excluding the above water-soluble polymeric compound). The transition metal oxide is preferably tungsten oxide. The water-soluble polymeric compound is preferably an alkyl cellulose such as methyl cellulose. The water-soluble compound having a hydroxy group is preferably alcohols such as ethylene glycol and glycerol or organic acids such as oxalic acid and glycolic acid. As the composite film develops a color by irradiation with UV rays, the film is useful as a dimming film, a recording medium, a photoreceptor for blueprint (cyanotype), or the like.
ADACHI KENTA
ISHIDA HIROTAKA
| JPH06242472A | 1994-09-02 | |||
| JPH06250307A | 1994-09-09 | |||
| JPH09127559A | 1997-05-16 | |||
| JP2008272289A | 2008-11-13 | |||
| JPH07188590A | 1995-07-25 | |||
| JPS6243438A | 1987-02-25 | |||
| JPH09208715A | 1997-08-12 | |||
| JPS53143346A | 1978-12-13 | |||
| JPH06242472A | 1994-09-02 | |||
| JPH06250307A | 1994-09-09 | |||
| JPH09127559A | 1997-05-16 | |||
| JP2008272289A | 2008-11-13 | |||
| JPH07188590A | 1995-07-25 | |||
| JPS6243438A | 1987-02-25 | |||
| JPH09208715A | 1997-08-12 |
Seiji Ozawa
Yusaku Tokai
High Kazuya Tsu
Makoto Horiuchi